# Copyright 2020 The TensorFlow Quantum Authors. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
# ==============================================================================
"""Module functions for tfq.differentiators.*"""

from tensorflow_quantum.python.differentiators.adjoint import (
    Adjoint,)

from tensorflow_quantum.python.differentiators.linear_combination import (
    ForwardDifference,
    CentralDifference,
    LinearCombination,
)

from tensorflow_quantum.python.differentiators.parameter_shift import (
    ParameterShift,)

from tensorflow_quantum.python.differentiators.differentiator import (
    Differentiator,)
